BUG: unable to handle page fault for address: fffffbfff0000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 4650 Comm: jbd2/sda1-8 Not tainted 6.12.0-rc2-next-20241008-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc9000dd27178 EFLAGS: 00010286 RAX: 0000000000000001 RBX: 1ffffffff0000000 RCX: ffffffff81cf65ff RDX: 0000000000000000 RSI: 0000000000000005 RDI: ffffffff80000000 RBP: ffffffffffffffff R08: ffffffff80000004 R09: 1ffffffff0000000 R10: dffffc0000000000 R11: fffffbfff0000000 R12: ffffffff80000000 R13: 0000000000000005 R14: dffffc0000000001 R15: fffffbfff0000001 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff0000000 CR3: 0000000031458000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_read include/linux/instrumented.h:26 [inline] copy_from_kernel_nofault+0x6f/0x2f0 mm/maccess.c:35 bpf_probe_read_kernel_common include/linux/bpf.h:2960 [inline] ____bpf_probe_read_compat kernel/trace/bpf_trace.c:294 [inline] bpf_probe_read_compat+0x10f/0x180 kernel/trace/bpf_trace.c:287 bpf_prog_cb06cae8179e3bfa+0x43/0x45 bpf_dispatcher_nop_func include/linux/bpf.h:1257 [inline] __bpf_prog_run include/linux/filter.h:701 [inline] bpf_prog_run include/linux/filter.h:708 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2318 [inline] bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2359 __traceiter_ext4_es_lookup_extent_enter+0x76/0xd0 include/trace/events/ext4.h:2292 trace_ext4_es_lookup_extent_enter include/trace/events/ext4.h:2292 [inline] ext4_es_lookup_extent+0x8ec/0xa90 fs/ext4/extents_status.c:1011 ext4_map_blocks+0x1f9/0x1960 fs/ext4/inode.c:623 ext4_journal_bmap+0x146/0x2c0 fs/ext4/super.c:5794 jbd2_journal_bmap fs/jbd2/journal.c:928 [inline] jbd2_journal_next_log_block+0x236/0x3f0 fs/jbd2/journal.c:826 jbd2_journal_get_descriptor_buffer+0xc1/0x4e0 fs/jbd2/journal.c:969 jbd2_journal_commit_transaction+0x175b/0x67e0 fs/jbd2/commit.c:610 kjournald2+0x41c/0x7b0 fs/jbd2/journal.c:201 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: CR2: fffffbfff0000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc9000dd27178 EFLAGS: 00010286 RAX: 0000000000000001 RBX: 1ffffffff0000000 RCX: ffffffff81cf65ff RDX: 0000000000000000 RSI: 0000000000000005 RDI: ffffffff80000000 RBP: ffffffffffffffff R08: ffffffff80000004 R09: 1ffffffff0000000 R10: dffffc0000000000 R11: fffffbfff0000000 R12: ffffffff80000000 R13: 0000000000000005 R14: dffffc0000000001 R15: fffffbfff0000001 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff0000000 CR3: 0000000031458000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 4f 8d fisttps -0x73(%rdi) 3: 3c 31 cmp $0x31,%al 5: 4c 89 fd mov %r15,%rbp 8: 4c 29 dd sub %r11,%rbp b: 48 83 fd 10 cmp $0x10,%rbp f: 7f 29 jg 0x3a 11: 48 85 ed test %rbp,%rbp 14: 0f 84 3e 01 00 00 je 0x158 1a: 4c 89 cd mov %r9,%rbp 1d: 48 f7 d5 not %rbp 20: 48 01 dd add %rbx,%rbp * 23: 41 80 3b 00 cmpb $0x0,(%r11) <-- trapping instruction 27: 0f 85 c9 01 00 00 jne 0x1f6 2d: 49 ff c3 inc %r11 30: 48 ff c5 inc %rbp 33: 75 ee jne 0x23 35: e9 .byte 0xe9 36: 1e (bad) 37: 01 00 add %eax,(%rax)